package cn.lili.common.utils;

import javax.servlet.http.HttpServletRequest;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * CheckMobileUtil
 *
 * @author Chopper
 * @version v1.0
 * 2021-02-04 14:56
 */
public class CheckMobileUtil {


    //\b 是单词边界(连着的两个(字母字符 与 非字母字符) 之间的逻辑上的间隔),
    //字符串在编译时会被转码一次,所以是 "\\b"
    //\B 是单词内部逻辑间隔(连着的两个字母字符之间的逻辑上的间隔)
    static String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i"
            + "|windows (phone|ce)|blackberry"
            + "|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp"
            + "|laystation portable)|nokia|fennec|htc[-_]"
            + "|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";
    static String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser"
            + "|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";

    //移动设备正则匹配：手机端、平板
    static Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE);
    static Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE);

    /**
     * 检测是否是移动设备访问
     *
     * @param request 浏览器标识  获取方式：
     * @return true:移动设备接入，false:pc端接入
     * @Title: check
     */
    public static boolean check(HttpServletRequest request) {
        String userAgent = request.getHeader("USER-AGENT").toLowerCase();
        if (null == userAgent) {
            userAgent = "";
        }
        //匹配
        Matcher matcherPhone = phonePat.matcher(userAgent);
        Matcher matcherTable = tablePat.matcher(userAgent);
        if (matcherPhone.find() || matcherTable.find()) {
            return true;
        } else {
            return false;
        }
    }
}
